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(No Model.; l 2 sheets-sneer 1. J.- D. MoDONALD.

SMELTING FURNAGE. No. 586,910. Patented July 20, 1897.

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J. D. McDONALD.

-SMELTING PURNAGE.

No1 586,91 O Patented July 20 1897.

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` WlT/VESSES UNITED STATES PATENT Trice.

RICHARD wATsoN DEMoREsnIoF, SAME PLACE, AND RINALDo McooN- NELL, orMAL'rAwA, CANADA.

sMELTlNe-FURNAc-E.

` SPECIFICATION forming part of Letters jlatent No. 586,910, dated July20, 1-897. Application tied May 18,1896. sain No. 59 1,9s2.` (Nomad.)

To all whom t may concern: Be it known that I, JOHN D, MCDONALD, acitizen of the United States, residing at Sudbury, Ontario, Canada, haveinvented a new and useful Improvement in Smelting-Furnaces,of which thefollowin gis a specication.

My invention is an improvement in smelting-furnaces, and has .for anobject, among other improvements, to provide anovel apparatus wherebytosecure a continuous combustion with or without the continuous use ofcarbonaceous fuel, to secure a steady feed of the ore and an efiicientcontrolfof such feed by the lateral vibration thereof; and the inventionconsists in certain novel constructions and combinations of parts, aswill be hereinafter described, and pointed out in the claims.

In the drawings, Figure l is a vertical longitudinal section of afurnace embodying my improvement. Fig. 2 is an elevation of the crucibleend of said furnace, parts being broken away. Fig. 3 is an elevation ofapart of the feed end of the furnace. Fig. 4 is a cross-sectional viewof the furnace on or about line 4 I of Fig. l. Fig. 5 is an enlargeddetail View illustrating the ore-feeding devices and the vibratingmechanism. Fig. 6 is a vertical longitudinal section drawn through thecrucible and the inclined plate leading thereto. Fig. '7 is a section onabout line 7 7 of Fig. 2.. Fig. 8 is a detail side view of the vibratingore-supporting table. Fig. 9 is a detail view of one of the transverseslides for use in inserting and removing the feeder from the furnace,and Fig. l0 is a-detail View showing the connection between the sectionsof the feeder.

In carrying out my invention I have soughtto provide a simple apparatusf or use in smelting pyrites, blend, sulfurets or sulfids, or other oreswith or without the continued use of carbonaceous fuel.

In constructing the furnace I build a suitable brickwork or otherfoundation A to furnish a bed B, which inclines from end to end and maybe of any suitable length, according to the capacity of the furnace orthe character of the ores to be treated or the quality of the output,and at a suitable distance 4above this bed B, I provide the arch or roofC, formi ing a flue D, which extends from end to end overthe bed B andcommunicates near its upper end with the flue E, which leads intothestack F, as shown in Fig-l.

The hanging damper G controls that portion of the flue D 'above thejunction of the flue E and may be manipulated from the front end of thefurnace through the infeed door I-I', as will be readily understood. Thefront end of the flue D is closed by the front or plate H, having asuitable door, and such front II is bolted or otherwise secured in'placeso it may be conveniently removed when it is desired to insert orwithdraw the feeding devices presently described.

Upon the bed B and extending from end to end thereof I provide rails,forming ways B for the feeding-carriages, and these ways are broken outat bat such intervals `that'the wheels of the feeding-carriages willcome opposite the broken-out portions b when the feeding-carriages areadj usted to position for use, as shown in Fig. l. Topermit theinsertionvof these carriages and their ready removal without the joltingand difiiculties `which would result from the cut-out portions h, Iprovide the slides b2, which extend transversely ofthe furnace and havea handle portion b2 outside the furnace, by which they vmay be adj ustedas desired. These slides operate in the notches or cut-out portions band when in the position shown in Fig. 9 ll the notches b,so that railsB are made practically continuous. This is the position in which theslide is adj usted when the feed-carriage is be ing inserted in thefurnace.

, Vhen the carriage has been inserted to the position shown in Fig. l,the several slides are moved out to the dotted position shown in Fig. 9,so the wheels of the carriage will rest in the cut-out portion b, so thecarriages may be vibrated laterally on the 'swinging carrier presentlydescribed. These swinging carriers consist of links I, pivoted at i attheir upper ends, extending down through boxesI and having at theirlower ends hooks I2, forming seats for the feeding-carriages, suchfeeding-carriages and the hooks, as well as the contacting portions atthe pivot of the Swingin g link I, being provided with Wearplates i',which may be of any suitable construction. These links I, of which Iemploy any suitable number for each carriage-section, serve to supportsuch carriage-sections when they have been adjusted to position withtheir wheels above the cut-out portions b of the ways and suspend thecarriage-sections when in such position, so they may be swung freely ina lateral direction by means of connections with the eccentrics J on theshaft J, which eccentries maybe adjusted on the shaft to swing theseveral carriage-sections either together or reciprocally or otherwise,as may be desired. The eccentric J/is connected with the carriage bymeans ofasuit able rod or pitman united at one end with the eccentric inthe usual manner and connected at its other end with lugs depending fromthe carriage by means of a bolt, as best shown in Fig. 5, or in othersuitable manner. The swinging links I pass down through the boxes I',which may be cast and suitably built into the furnace-wall, and theseboxes I are provided in their lower edges with grooves I3, whichcommunicate with corresponding grooves in the roof of the fine andreceive the dust-guard plate upon the carriage, as will be presentlydescribed.

The carriage comprises one or more sections, and for convenience incasting it is preferred to make it in several sections, each constructedas I will now describe. I make the carriage-sections with a main framein the form of a water-jacket, having a base portion K and upright sideportions K communicating therewith, such main portion having at itsopposite ends lug-like portions K2, which rest in the hooks I2 of theswinging links, and having between its ends bracket-lugs K3 for thewheels K4 and lugs K5, perforated for the passage of the bolts, by whichthe adjacent carriage-sections are secured together. In connecting theadjacent sections of each carriage so the water in both may circulate itmay be preferred to effect such connection by means of a tube or tubes,as shown in Fig. ld, such tube KG being packed by Babbitt metal or othersuitable packing, if desirable or necessary. The inlet and outlet pipesfor water for the cooling-jacket may be arranged as shownin Fig. l or inany othersuitable manner. Upon the innerfaces of the upright portions K,I provide the ribs K7, arranged a short distance above the base K andserving to secure upon such base the false wear-plate KS, which restsupon the waterjacket base K and protects the same from wear. Upon theupper ends of the side portions K', I secure by bolts or otherwise thedust-guard plates K, which extend up within the grooves I3, beforedescribed.

In the operation of the described construction the ore is fed in at thegate II onto the upper end of the carriages constituting` the feeddevices and passes down the same with greater or less speed, as desired,the speed being` controlled by the rapidity of the vibration given tothe swinging carriages, which may be accomplished by the mechanismbefore described. In its passage down the flue D the ore will be heatedby the heat'rising from the crucible presently described and passing upthe iue D and thence out the ilue E, and it is manifest that thetemperature of the ore when delivered into the Crucible may be higher orlower, according to the time consumed in the passage of such ore overthe swinging carriages,which time, as before suggested,may be regulatedby the speed at which the carriages are Vibrated. At the lower end ofthe feed devices the ore is delivered by a spout L onto the upper end ofthe doublewinged inclined plate M, which has a lower wing M' alongsideand around the lower edge of the mouth of the crueible and a wing M2leading up from the wing M/ to receive the ore from the spout Il. Theinclined plate M is water-jacketed and is connected with the erucible Nby means of the ring N', encircling the mouth of the Crucible and boltedto the top flanges of the crucible and to the upper and lower section ofthe waterjacket of the plate M. This crucible N has the air-box O,twyers O, mud-port O2, and legs O3, and is open at its upper end ormouth to receive the ore from the inclined plate M.

On the inclined plate M immediatelyabove the mouth of the erneible Iprovide the de- Hector P, having the sides p, which diverge from itsupper end to the opposite sides of the crueible and tend to deflect theore in such manner that it will in flowing down the inclined plate passoff to one side and be directed into the opposite sides of the crucibleinstead of into the higher rear end thereof. The purpose of thisdetlcetor is to prevent the ore from clogging in the mouth of thecrucible and also to avoid subjecting the tine particles of the ore tothe direct action of the tierce blast which leads upward from thecrucible, as will be readily understood.

As seen in Fig. l, the crucible end of the furnace is closed and thesmelted ole maybe discharged through the well connection at Q.

In the treatment of fusible ores, such as sulfurets orsultids, it willbe understood that after the furnace has been started by means of a firein the crucible of coke or other fuel it may be continued without theuse of separate fuel by the combustion of the particles of theore; also,that the temperature at which the ore is delivered into the Crucible maybe controlled by the manipulations of the feeding devices, as beforedescribed.

In controlling the discharge of the ore to the crucible I provide aslide or gate R, movable upon the lower wing of the inclined plate M andsuitably operated, preferablyby means of screws R', leading outside thefurnace. It is preferred to arrange these gates in pairs, two at eachside of the mouth of the cruciblc, and to control the several gatesindependently, such gates being hinged at their outer edges and movableat their inner edges toward and from the mouth of the crucible, and

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so enable the ore to be discharged to anysuitable point within the saidcrucible.

To avoid wear of the inclined plate M, I provide a wear-plate M2, heldremovably therein, which can be cheaply renewed when worn.

By arranging the ga-tes in pairs, one above the other, the gates may bemanipulated to direct the ore into the upper or lower part of the mouthof the crucible, as may be desired.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. In a smelting-furnace, the combination of the rails or ways havingnotched or cut-out portions, the feeding-carriage.moving on said ways orrails and the hangers arranged to support the carriage when it drops inthe notches or cut-out portion, substantially as shown and described.

2. The combination of the bed, the ways or rails thereon cut out ornotched as described,

'the swinging links forming hangers, and the carriage arranged to restin said hangers when the wheels rest in the notches or cut-out portionof the ways or rails, substantially as shown and described.

3. In a smelting-furnace the crucible having its mouth inclined andprovided with an inclined plate having portions extended alongside themouth of the crucible substantially as shown and described.

4. The combination of thejacketed crucible,

. the ring surrounding the mouth thereof, and

the jacketed inclined plate having its upper and lower sections securedabove and below said ring-plate, substantially as shown and described.

5. In a smelting-furnace, the combination with the crucible and theinclined plate leading to the mouth thereof, of a detlector arranged onsaid plate in advance of the mouth of the crucible and adapted to directthe material to the sides of the mouth of the said crucible,.substantially as set forth.

6. In a smelting-furnace, the combination of the furnace wall or frame,having longitudinal side grooves, the feed-carriage having at its sidesldust-guard plates operating in the grooves of the furnace walls orframe, means for suspending said feed-carriage and means for vibratingthe same', substantially as set forth.

7. The combination of the feeder comprising the suspended ore-carriagewith the tine leading to the stack or uptake and the hanging damperarranged over the carriage and in advance of said flue, substantially asand for the purpose hereinbefore set forth.

. 8. The combination of the line leading to the stack or uptake, thehanging damper and ore-carriage with the suspended hook-links supportingthe carriage, the damper being arlrangved over the carriage and inadvance of the flue leading to the stack, substantially as and for thepurpose hereinbeforeset forth.

9. The combination of the ore-carriage having the wheels with the railshaving the slots or cut-outportion and means whereby to suspend saidcarriage with its wheels in the slots or cut-out portions, substantiallyas set forth.

l0. The combination of the ore-carriage and notched or cut-out rails,with the slide operating transversely of said rails and means forsuspending the carriage, substantially as set forth.

ll. The combination of the ore-carriage, notched or cut-out rails, theslides operating transversely of the rails and the dust-guards extendinglengthwise of said carriage, substantially as set forth.

l2. In a smelting-furnace, a feeding-carriage having its frame formedwith base and upright side sections made hollow and formingWater-jackets substantially as shown and described.

13. The combination of the feeding-carriage, the links suspending such acarriage, the furnace-walls and the boxes builtin the furnace-walls andformed with chambers through which the links are passed and in whichthey swing substantially as shown and described.

14. The combination of the feeding-carriage, the crucible below thelower end of said carriage, the inclined plate and the divider ordefiector, said plate and divider being above the mouth of the crucible,substantially as set forth.

l5. In a smelting-furnace, a Crucible having its mouth inclined from itsupperto its lower side and a plate coinciding with said mouth andextending alongside and from the IOO upper to the lower side thereofsubstantially as shown and described.

1G. The combination with the Crucible and the inclined plate at themouth thereof, of the divider or deflector on said plate above the mouthof the crucible and the slides or gates arranged ou said plate alongsidethe mouth of the crucible, substantially as set forth.

1'7. In an apparatus substantially as described, the ore-carriageconsisting of the frame having jacketed base and upright portions andhaving the latter provided on their inner faces near the surface of thebase with inwardly-projecting ribs, and the wear-plate resting on thebase of said frame and held beneath the ribs of the upright portionssubstantially as shown and described.

JOI-IN D. MCDONALD. v Witnesses:

F. F. LEMIEUX, R. W. DE Monnsr.`

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